Filter.



PATENTED JULY 16, 1907.

J. T. H. PAUL.

FILTER.

urmoumn FILED APR. 1, 190'].

UNITED STATES PATENT OFFICE.

JOHN T. H. PAUL, OF CHICAGO, ILLINOIS, ASSIGNOR TO GOLDMAN & CO., OFCHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

FILTER Specification of Letters Patent.

Patented July 16, 1907.

Application filed April 1, 1907. Serial No. 365,716.

To all whom it may concern:

Be it known-that I, JOHN T. H. PAUL, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Filters, of which the followingis a specification.

This invention relates particularly to lilters lor use in filteringliquors; and the primary object of the in vention is to provide a filterof simple construction having a large capacity and having improved meansfor preventing any liquor from passing through the filter except throughthe proper channels of percolation.

The invention is illustrated in its preferred embodiment in theaccompanying drawing, which represents a broken vertical sectional viewof the improved filter,

The filter comprises, in its preferred embodiment, a casing A;distributer-elements, B; collector-elements, B; filter-masses B confinedbetween the collector-clements and the distributer-elements; and acentral outlet conduit, B made up of conduit-sections, with which thecollector and distributer-elements are equipped at their centers.

The casing A may be of any approved construction. As shown, it comprisesa cylinder (1 externally flanged at its ends; top and bottom ends a, arespectively, detachably connected with the cylinder; an inlet conduit aconnected with the bottom a near its periphery; and an outlet conduit aconnected with the bottom at its center and forming a continuation ofthe sectionally constructed conduit B of the filter-cells.

The collector and distributor-elements oi the filter alternate with eachother and in connection with the filtei material, comprise the filtercells through which the liquor must pass. Each collector-clement C0111-prises two annular screens b, b, equipped at their inper peripheralmargins with packing rings b 5*, respectively, and equipped at theirouter peripheral margins with packing rings 1), b, respectively. Spacingmembers a; are arranged between the screens and between the packingrings b b, to provide passages leading to the central outlet conduit.The packing rings b b also form sections of the sectional outlet conduitB The rings b b, are provided on their non-adjacent faces with groovesI), thus making the rings of channel-form cross-section.

The packing ring 12 affords a binding member for the outer periphery ofthe screen b, and is attached to the outer periphery of said screen inany suitable manner, as by soldering. The packing ring b is provided onits lower surface with an annular channel I) flanked by flanges b b thelatter flange being deeper or more extended than the former flange. Saidpacking ring b is provided on its upper surface with an annular channelb, flanked by flanges b, b. Within the circle of the flange I)", thepacking ring b is channeled or recessed as indicated at b to receive theouter margins of the screens 1), I), and the ring b'.

The ring if is provided on its upper surface with an annular recess bwhich is flanked on one side by the flange b of the ring I) and on theother side by a flange b which is higher than the flanges b, 1).

Each complete distribliter-element comprises a radially corrugatedperforate annular disk 11" equipped at its inner margin with aconduit-section b and at its outer margin with a packing ring b; and aperforate annular disk or screen I) equipped at its outer periphcry witha packing ring U The packing ring I) is provided on its upper surfacewith an annular recess b'-" flanked by flanges b'-"-, If, the flangeIfbeing higher than the flange If. The conduit-section b comprises atubular member equipped externally between its ends with a flange b'which constitutes a packing ring, being provided on its lower siniacewith an annular recess b which lies between a flange b and the lowerportion of the tubular member. The upper surface of the flange b is flatto receive the uncorrugated inner margin of the disk I). Slipped overthe upper end of the conduit section b is a packing ring I1 having onits upper surface an annular recess 1) located between a flange b andthe upper portion of the conduit section. The packing ring I) is cutaway at its lower side to receive the outer peripheral portion of thecorrugated disk b. Said ring is thus formed with a depending flange atits outer portion, and said flange is provided with radial channels I)through which access to the distributor-element is bad. The packing ringU is recessed upon its upper surface to receive the outer peripheralmargin of the perforate disk or screen I), and is provided on its lowersurface with an annular recess b flanked by flanges b b the flange I)being smaller or of less depth than the flange b It will be understoodthat in practice more cells are commonly employed in a filter than areillustrated in the drawing. At the bottom of the filter-casing, it isunnecessary to employ a complete distributor, such as is required in theintermediate portion oi the filter. Accordingly, the corrugatedperforate disk 11" is employed at the bottom of the filter. At the topof the filter, there is employed an imperiorate radially corrugated disk0 equipped at its central portion with a conduit-section c which forms acap for the sectional conduit B and is equipped with an externalrecessed flange a forming a packing ring. Beneath the corrugated disk 0is placed one of the perforated disks or screens b whose outer peripheryis equipped with a packing ring as shown.

In assembling the parts, the distributor and collectorelements arearranged in the order indicated, and an adequate amount offiltepmaterial is placed between I the casing and forming therewith anannular chamber, the

said elements and between the packing rings with which said elements areequipped. When the ends of the casing are screwed down, thefilter-material is compressed to the required density for filtrationpurposes between the distributor and collector-elements, and between thepacking rings the material is so tightly compacted as to be practicallyimpervious to liquor. When the filter is thus assembled, there remainsan annular space d between the inner surface of the cylindrical portionof the casing and the filter-cells, through which the liquor has accessto the distributor-elements. The chief purpose of the present inventionis to prevent the liquor from seeping along the surfaces of the outerpacking rings and finding a short-cut to the collector-elements andthence to the centralconduit. The annular flange 12 of the packingring 1) serves this purpose, since said flange prevents the liquor fromfinding its way into the j oiut f, between the packing ring I; and thepacking ring b and thence through the collector-element to the centralconduit. It will be noted that the flanges b and b of the outer pack-April 2, 1907.

What I regard as new, and desire to secure by Letters Patent, is-

1. In a filter, the combination of a casing provided with an inlet andhaving a central outlet, and filter-cells within filtercells beingconstructed with telescoping central conduit sections and distributerand c0l1ector-elements equipped at their external peripheries withpacking rings, the packing rings of the distributer-elements and thecollector-elements having annular flanges staggered with relation toeach other, and filter-masses extending between and compacted betweensaid packing rings, for the purpose set forth.

2. In a filter the combination of a casing provided with an inlet andhaving a central outlet and filter-cells within the casing and formingtherewith an annular chamber, the filter-cells being constructed withtelescoping central c0nduit sections and alternating distributer andcollectorelements, each collector-element comprising a pair of annularscreens, one of which screens is equipped at its outer periphery with apacking ring having one surface provided with two annular flanges andhaving a recess adjacent to the inner one of said flanges, and the otherof said screens having its outer periphery equipped with a packing ringmember fitting within said recess and equipped with a flange, and eachdistributer-element being equipped at its outer periphery with a packingring, and filter-masses extending between and compacted between saidpacking rings, for the purpose set forth.

3. In a filter, the combination of a casing provided with an inlet andhaving a central outlet, and filter-cells within the casing and formingtherewith an annular chamber, the filter cells being constructed withtelescoping central conduit-sections and distributer andcollector-elements equipped at their external peripheries with packingrings, the packing ring of each collector-element comprising an annularmember 21 having an annular recess 1) on one surface and an annularrecess D on the other surface and having also a cut-away portion orrecess adjacent to the inner flange flanking the recess b an annularmember 11 fitting within said last-named recess and equipped with aflange D and the distributer-elements having at their outer peripheriespacking rings with flanges staggered with relation to the inner flangesof the packing rings of the collector-elements, and filtermassesextending between and compacted between said packing rings, for thepurpose set forth.

JOHN T. H. PAUL.

In the presence of D. CINCOLLTA, M. GETZ.

